<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>

    </swiper>
    <view class="goods-info-box">
      <view class="price">
        ￥{{goods_info.goods_price}}
      </view>
      <view class="goods-info-body">
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <view class="favi">
          <uni-icons type="star"></uni-icons>
          <text>收藏</text>
        </view>

      </view>
      <view class="yf">
        快递：免运费
      </view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <uni-goods-nav class="goods_nav" :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
      @buttonClick="buttonClick" />
  </view>
</template>

<script>
  import {
    mapState,
    mapMutations,
    mapGetters
  } from 'vuex'
  export default {
    computed: {
      ...mapState('m_cart', []),
      ...mapGetters('m_cart',['total'])
    },
    watch:{
   
      total:{
        immediate:true,
        handler(newVal){
          const findResult=this.options.find((x)=>x.text==="购物车")
          if(findResult){
            findResult.info=newVal
          }
      }
      }
    },
    data() {
      return {
        goods_info: {},
        options: [{
          icon: 'shop',
          text: '店铺'
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        // 右侧按钮组的配置对象
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      async getGoodsDetail(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        if (res.meta.status !== 200) return uni.$showMsg()
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ')
          .replace(/webp/g, 'jpg')
        this.goods_info = res.message
      },
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e) {
        if (e.content.text === '购物车') {
          // 切换到购物车页面
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      ...mapMutations('m_cart', ['addToCart']),
    
      buttonClick(e) {
        // 1. 判断是否点击了 加入购物车 按钮
        if (e.content.text === '加入购物车') {

          // 2. 组织一个商品的信息对象
          const goods = {
            goods_id: this.goods_info.goods_id, // 商品的Id
            goods_name: this.goods_info.goods_name, // 商品的名称
            goods_price: this.goods_info.goods_price, // 商品的价格
            goods_count: 1, // 商品的数量
            goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
            goods_state: true // 商品的勾选状态
          }

          // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
          this.addToCart(goods)

        }
      }
    }
  }
</script>

<style lang="scss">
  swiper {
    height: 750rpx;

    swiper-item {

      image {
        height: 100%;
        width: 100%;
      }
    }
  }

  .goods-info-box {
    padding: 10px;
    padding-right: 0;

    .price {
      color: #C00000;
      font-size: 18px;
      margin: 10px 0;
    }

    .goods-info-body {

      display: flex;
      justify-content: space-between;

      .goods-name {
        font-size: 13px;
        padding-right: 10px
      }

      .favi {
        width: 120px;
        color: gray;
        display: flex;
        flex-flow: column;
        align-items: center;
        justify-content: center;
        border-left: 1px solid #efefef;
        font-size: 12px;

      }
    }

    .yf {
      font-size: 12px;
      margin: 10px 0;
      color: gray;
    }

  }

  .goods-detail-container {
    // 给页面外层的容器，添加 50px 的内padding，
    // 防止页面内容被底部的商品导航组件遮盖
    padding-bottom: 50px;
  }

  .goods_nav {
    // 为商品导航组件添加固定定位
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
</style>
